Full Answer
What are the different types of motors used in industrial drives?
Ok, let’s take a short overview of twelve most basic motor types used for different industrial electric drives: DC Series Motor. DC Shunt Motor. Cumulative Compound Motor. Three phase Synchronous Motor. Squirrel Cage Induction Motor. Double Squirrel Cage Motor.
What are the different types of DC motors?
1. DC Series Motor. Since it has high starting torque and variable speed, it is used for heavy duty applications such as electric locomotives, steel rolling mills, hoists, lifts and cranes. 2. DC Shunt Motor. It has medium starting torque and a nearly constant speed.
What is a compound motor used for?
Cumulative compound motor is a varying speed motor with high starting torque and is used for driving compressors, variable head centifugal pumps, rotary presses, circular saws, shearing machines, elevators and continuous conveyors etc. 4. Three-phase Synchronous Motor
What are the applications of DC motor in power system?
Since it has high starting torque and variable speed, it is used for heavy duty applications such as electric locomotives, steel rolling mills, hoists, lifts and cranes. 2. DC Shunt Motor It has medium starting torque and a nearly constant speed.
What is the most commonly used type of motor?
3-phase AC induction motors3-phase AC induction motors are the most widely used motors in industrial and commercial applications. They are divided into two sub-categories: Squirrel cage motors.
What is the most common type of motor used in industry?
AC induction motorsAC Induction/Asynchronous The majority of industrial motors are three-phase AC induction motors due to its reliability and low cost.
What is the most common AC motor?
Induction motor rotorsInduction motor rotors are the most common type of AC motor and are used for various types of pumps, compressors, and other machines.
Why induction motor is mostly used?
Induction motors are simple and rugged in construction. Advantage of induction motors are that they are robust and can operate in any environmental condition. Induction motors are cheaper in cost due to the absence of brushes, commutators, and slip rings.
Which of the following motors are commonly used in medical field?
In medical fields which DC motor is widely used? Explanation: BLDC motors are widely used in various applications of medical industry.
Where are DC motors used in industry?
DC Series Motor: DC series motors are widely used for electrical traction applications, i.e, these motors are widely used in electric locomotives, rapid transit systems and trolley cars. DC series motors are employed in cranes, hoists and in conveyers because of high staring torque capability.
What are the 3 basic types of AC motors?
Three-phase motors. Squirrel cage induction motor. Phase wound motor or wound motor or slip-ring motor.
What are the four types of motors?
There are 4 main types of DC motors:Permanent Magnet DC Motors. The permanent magnet motor uses a permanent magnet to create field flux. ... Series DC Motors. In a series DC motor, the field is wound with a few turns of a large wire carrying the full armature current. ... Shunt DC Motors. ... Compound DC Motors.
What types of motors are used in industry?
Motor types for industrial electric drivesDC Series Motor.DC Shunt Motor.Cumulative Compound Motor.Three phase Synchronous Motor.Squirrel Cage Induction Motor.Double Squirrel Cage Motor.Slip ring Induction Motor.Single phase Synchronous Motor.More items...•
Where is synchronous motor used?
In the fractional horsepower range, most synchronous motors are used where precise constant speed is required. These machines are commonly used in analog electric clocks, timers and other devices where correct time is required. In higher power industrial sizes, the synchronous motor provides two important functions.
Why synchronous motor is not used in industry?
Synchronous motors cannot be started on load. Its starting torque is zero. These motors have tendency to hunt. When loading on the synchronous motor increases beyond its capability, the synchronism between rotor and stator rotating magnetic field is lost and motor comes to halt.
Where is induction motor used?
AC induction motors are the most common electric motors in the world. These simple, reliable and economical motors are found in refrigerators, washing machines and furnaces, as well as conveyors, pumps, winders, wind tunnels and other industrial equipment.
What is shaded pole motor?
Finally, the shaded-pole motor uses unevenly divided poles with shading coils which cause a rotating field to move in the direction of the shaded pole (i.e., irreversible). Shaded-pole motors are among the cheapest of the single-phase machines. Synchronous single-phase motors are used in timing devices.
What is a stepper motor?
Stepper Motors are electro-mechanical devices powered by alternating current to produce rotational motion and positioning. Generally, stepper motors do not incorporate a feedback loop as do servomotors, but instead, achieve position control by turning the motor rotor a discrete number of steps.
What type of motor is used to drive a crane drum?
An AC motor is the likely choice for driving a pump; a DC motor is a good match to drive a crane drum where variable speed is important; gearmotors fulfill the same duties as bare AC and DC motors except they come with integral gear reductions; and air and hydraulic motors fill similar needs in situations where electricity is not practical or suitable.
What is electrical motor?
Electrical motors include AC or DC varieties, which are further broken out by specific special purpose electrical motors, including gearmotors, stepper motors, servomotors, and linear motors. Hydraulic and pneumatic motors rely on fluid (oil, air) for their motive power. Chemical motors include outboard motors for use on boats and rocket motors, ...
What is servomotor?
Servomotors are electro-mechanical devices powered by alternating or direct current to produce rotational motion and positioning. Servomotors make use of a feedback loop to control the radial position of the motor rotor with respect to its stator. They are specific to motion control applications. Servomotors are used in positioning applications where smooth, controllable motion is paramount, an industrial robot, for example. A packaging machine might use a servomotor to index a precise amount of packaging film into a forming zone, in a second example, where in the past such feeding might have been controlled with a motor-driven mechanical indexer.
What is hydraulic motor?
Hydraulic Motors are mechanical devices powered by fluid to produce rotational motion. The motion provides rotational work to drive other rotating elements such as the drive wheels of a heavy- equipment excavator. Hydraulic motors are used extensively in construction machinery where rotary motion is needed from a compact device and hydraulic power is already available. Hydraulic motors can be vane, gear, or piston types, similar to hydraulic pumps. LSHT, or Low Speed, High Torque motors are available from some makers. A modified vane-type motor, called a rotary abutment motor, purports to have lower friction and better sealing than an equivalent vane motor.
What is AC motor?
AC Motors. AC Motors are electro-mechanical devices powered by alternating current to produce rotational motion. The rotation provides mechanical work to drive other rotating machines such as pumps. Standard frame sizes are available over a range of powers to ease interchangeability.
What is a single phase series motor?
Single phase series motor is generally used for driving small domestic appliances like refrigerators and vacuum cleaners etc.
What is a repulsion motor?
Repulsion motor is commonly used for drives which require large starting torque and adjustable but constant speed as in coil winding machines.
What type of motor is used for electric motors?
Ok, let’s take a short overview of twelve most basic motor types used for different industrial electric drives: 1. DC Series Motor. Since it has high starting torque and variable speed, it is used for heavy duty applications such as electric locomotives, steel rolling mills, hoists, lifts and cranes. 2.
What is capacitor start and run?
Hence, capacitor-start-and-run motors are commonly used for drives requiring quiet operations.
Can a 3 phase alternator be used at far off places?
It cannot be used at far off places which are not served by electric supply. However, the above two disadvantages can be overcome by installing diesel-driven DC generators and turbine-driven 3-phase alternators which can be used either in the absence of or on the failure of normal electric supply.
What is the most common motor used today?
Some of the most common motors used today are DC brush motors, DC brushless motors, stepper motors, servo motors, linear motors, direct drive motors, AC brushless motors. In this blog, we shall look at the types of motors that are mainly used by hobbyists and makers in their projects. Brushed DC motors.
What is a stepper motor?
Stepper motors. DC motors that move in discrete steps are called ste pper motors. They have several coils that are organized in groups called phases. As each phase gets energized in sequence, the motor rotates, one step at a time. In fact, using a computer controlled stepping, one can get very precise positioning.
What is the difference between AC and DC servos?
While AC servos can deal with higher current surges and are used for industrial machinery, DC servos are for smaller hobbyist applications. The gears inside the servo convert the output with slower rotation speed but with more torque. This produces a large amount of force for a short period of time.
How do electric motors work?
Most electric motors function through the interaction between the motor’s magnetic field and electric current in a wire winding to produce force in the form of rotation of a shaft. An electric motor can run on power from a direct current (DC) source, examples being batteries, motor vehicles or rectifiers.
What are some examples of industrial uses for electric motors?
Industrial uses include blowers, machines and power tools, fans and pumps. Hobbyists, on the other hand, use motors in relatively smaller applications that require movement such as robotics or modules with wheels.
What is a motor?
So first let’s look at what the term motor means. A motor or an electric motor is an electrical machine that converts electrical energy into mechanical energy. Going by this definition, any appliance that moves or has moving parts and runs on electricity would have a motor in it.
Do servo motors have an edge?
So in larger systems, where powerful motors take up a bigger portion of the system cost, servo motors tend to have an edge. Several applications, including laser cutting machines, are available in two price groups, with the low-cost range using stepper motors and servo motors being used in the high-performance range.
What is a permanent split capacitor motor?
These motors are used in systems that have variable speed fans which can adjust up and down as demand changes instead of running in only full on/off modes. These systems are extremely energy efficient and are becoming more popular as homeowners update their HVAC systems.
Do AC motors use capacitors?
Somewhat less common are air conditioner motors that use capacitors both at startup and during the run process. These systems use a two-phase power cycle, where the starting capacitor is still disconnected when its job is done. Meanwhile, the run capacitor helps smooth out peaks and valleys in the power draw and makes the unit run more efficiently.
What is the difference between a blower motor and a condenser motor?
Blower motors also have a capacitor , in addition to way more wires than condenser fan motors.
Why does my blower motor fail?
The main cause for blower motors failing is that dirty air passed over them and stopped up the vent hole, causing the motor to overheat .
Why does my blower motor turn backwards?
Sometimes a blower motor experiences a capacitor failure, causing it to turn backward. They look normal running this way but move almost no air. After a couple of hours, the evaporator coil freezes and the house overheats, prompting the homeowner to call for help.
What is an ECM motor?
The ECM motor is a blower motor with an electronic control module mounted on the end. These motors are special; some must be set up at the supply house with special programming. Others have program modules you can buy to do it yourself. A few particularly advanced models even allow you to program the unit from your phone!
How much horsepower does a condenser fan motor have?
These motors are usually one speed and come in horsepower ranges from 1/6 hp to 1/3 hp.
What is a start winding?
The start windings are very small wires that are wound on the motor to deliver a quick burst of power and start the motor. Since the start windings are only designed for the initial spark. if the start windings have to work for more than about three seconds, they’re likely to burn out.
What is the main service issue on a condenser fan motor?
The main thing to remember on a condenser fan motor is the main service issue is usually a bad capacitor. This issue generally surfaces during summer, when the weather is hottest. If the motor is bad, measure the fan blade height to the finger guard before you ever remove it.
What is a diaphragm pump?
These pumps are available in a wide range of configurations, including the following: Diaphragm pumps use air or hydraulic fluid in a pressurized environment to force wastewater to move in a specific direction through a water treatment plant when the diaphragm is open and to stop flow when the diaphragm is closed.
How do gear pumps work?
Lobe pumps offer superior control over the flow of fluids and work by pushing wastewater in a controlled way and in a single direction.
What is a submersible pump?
Submersible pumps are generally used to assist in draining away fluids in wastewater treatment plants. They are placed directly in the water or the slurry to provide added pumping power for removing fluids from a particular area.
